public void TestXGBoostNaiveEvaluate()
{
var filename = @"../../../../datasets/xgboost/model_xbg_trees.txt";
var treesString = File.ReadAllText(filename);
var model = XGBoostNaive.Create(treesString);
var filename2 = @"../../../../datasets/xgboost/xgboost_test_cases_no_feature_names.txt";
var samplesString = File.ReadLines(filename2);
var samples = new Dictionary <string, double[]>();
foreach (var line in samplesString.Skip(1))
{
var parts = line.Split(',');
var sample = parts[0];
var featureIndex = int.Parse(parts[1]);
var value = float.Parse(parts[2]);
if (!samples.ContainsKey(sample))
{
samples.Add(sample, new double[1000]);
}
samples[sample][featureIndex] = value;
}
const int probablity_feature_index = 840;
var timer = Stopwatch.StartNew();
foreach (var sample in samples)
{
var actual = model.EvaluateProbability(sample.Value);
var expected = sample.Value[probablity_feature_index];
Assert.InRange(actual, expected - 1e-06, expected + 1e-06);
}
timer.Stop();
output.WriteLine($"Time taken for {samples.Count} evaluations: {timer.Elapsed.TotalMilliseconds} ms");
}
public void TestXGBoostNaiveTiming()
{
var filename = @"../../../../datasets/xgboost/model_xbg_trees.txt";
var treesString = File.ReadAllText(filename);
var model = XGBoostNaive.Create(treesString);
var filename2 = @"../../../../datasets/xgboost/xgboost_test_cases_no_feature_names.txt";
var samplesString = File.ReadLines(filename2);
var samples = new Dictionary <string, double[]>();
foreach (var line in samplesString.Skip(1))
{
var parts = line.Split(',');
var sample = parts[0];
var featureIndex = int.Parse(parts[1]);
var value = float.Parse(parts[2]);
if (!samples.ContainsKey(sample))
{
samples.Add(sample, new double[1000]);
}
samples[sample][featureIndex] = value;
}
var inputs = samples.Select(m => m.Value).ToArray();
var timer = Stopwatch.StartNew();
foreach (var sample in inputs)
{
model.EvaluateProbability(sample);
}
timer.Stop();
output.WriteLine($"{nameof(TestXGBoostNaiveTiming)} - Time taken for {samples.Count} evaluations: {timer.Elapsed.TotalMilliseconds} ms");
}
public void TestXGBoostNaiveCreate()
{
var filename = @"../../../../datasets/xgboost/model_xbg_trees.txt";
var treesString = File.ReadAllText(filename);
var model = XGBoostNaive.Create(treesString);
// TODO: ensure correctness of each tree
}
